SOLUTION: suppose you have entered a 62 mile biathlon that consist of a run and a bicycle race. during your run your average velocity is 8mph and during your bicycle race your average veloci

Question 884133: suppose you have entered a 62 mile biathlon that consist of a run and a bicycle race. during your run your average velocity is 8mph and during your bicycle race your average velocity is 20mph. you finished the race in 4 hrs. what is the distance of the run?
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
uppose you have entered a 62 mile biathlon that consist of a run and a bicycle race. during your run your average velocity is 8mph and during your bicycle race your average velocity is 20mph. you finished the race in 4 hrs. what is the distance of the run?
***
let x=travel time of running race
4-x=travel time of bicycle race
distance=speed*travel time
..
8x+20(4-x)=62
8x+80-20x=62
12x=18
x=3/2
8x=12
distance of the run=12 miles
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